http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspxCLR provides platform invoke mechanism to enable managed applications to call unmanaged APIs exported in a DLL. Here is a simple example: using System.Runtime.InteropServices; public class HelloWorld { public static void Main() { MessageBox(0, "Helloen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#182074Wed, 14 Jul 2004 15:45:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:182074thIs there any way to specify the calling convention to use for the delegate? Or other options available with DllImport (PreserveSig, etc.)?http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#182295Wed, 14 Jul 2004 17:33:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:182295Junfeng ZhangYes. Check out UnmanagedFunctionPointerAttribute (<a target="_new" href="http://lab.msdn.microsoft.com/library/en-us/cpref/html/T_System_Runtime_InteropServices_UnmanagedFunctionPointerAttribute.asp">http://lab.msdn.microsoft.com/library/en-us/cpref/html/T_System_Runtime_InteropServices_UnmanagedFunctionPointerAttribute.asp</a>)http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#184508Fri, 16 Jul 2004 16:45:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:184508Nick ParkerNice, I am going to have to play around with this at home now! :-)http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#256239Fri, 12 Nov 2004 09:36:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:256239TrackBackPInvoke ?????? DLL ??? Load/Unload ????????????http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#400054Tue, 22 Mar 2005 00:03:00 GMT91d46819-8472-40ad-a661-2c78acb4018c:400054Suzanne Cook's .NET CLR Loader Noteshttp://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#2104968Fri, 13 Apr 2007 01:45:32 GMT91d46819-8472-40ad-a661-2c78acb4018c:2104968Suzanne Cook's .NET CLR Notes<p>An unmanaged dll can be wrapped in a managed assembly by adding it as a file of a multi-module assembly.</p> http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#8992328Thu, 09 Oct 2008 04:32:09 GMT91d46819-8472-40ad-a661-2c78acb4018c:8992328IWebThereforeIAm<p>Calling function pointers from C#? Marshal.GetDelegateForFunctionPointer...</p> http://blogs.msdn.com/junfeng/archive/2004/07/14/181932.aspx#9338356Sun, 18 Jan 2009 20:16:32 GMT91d46819-8472-40ad-a661-2c78acb4018c:9338356asp.net and dllimport | keyongtech<p>PingBack from <a rel="nofollow" target="_new" href="http://www.keyongtech.com/1194687-asp-net-and-dllimport">http://www.keyongtech.com/1194687-asp-net-and-dllimport</a></p>